Why would you send out the bat signal for something someone said specifically that they might agree with? Maybe you just don't understand the 'bat signal' meme, I guess. Usually it means "this person's gonna argue with you", not "this person made it clear they may agree with you".
First, Carl, the original HQ bat signal meme, was not an arguer. He would state a position and people would agree with it. Second, Tempo loves to argue, especially with you. Third, his stance at the time was that he had not made an exception (but "might," indicating possible future movement on the position). Fourth, Tempo loves to argue with you. (Yes, I listed it twice.)